Sheet-metal casing for photographic films



y J. SCHULZ SHEET METAL CASING FOR PHOTOGRAPHIC FILMS Filed April 15.1926 Ill/6 rllllllllrllrrlla w III closing cap holding said other twomembers Patented May 10,1921,

UNITED STA m SCHULZ, OF BAR-HEN, GERMANY.

SHEET-[BILL CASING FOB PHOTOGRAPHIC Fm Application fled April lli, 1828,Serial No.

My invention relates to a multipartite sheet-metal casing for photograhic films, more especially so-called film pac s, and the characteristicfeature of this casing, in contradistinction to the known film packs ofsheet-metal, resides therein that it comprises only three sheet-metalmembers, viz, a boxshaped. back member, amid-member, and a togetherlightroof when it is in its closing position. Eac of said three membersconsists of only one piece which is provided with such additionalmembers as are necessary to connect the main members and to prevent themfrom being shifted relatively to each other.

The invention is illustrated dia rammatically and by way of example in te accompanying drawings, in which Figure 1 is a front-view of theimproved sheet-metal casing for photographic films; Figure 2 is a planthereof, F i urev 3 a vertical section therethrough, an Figure 4 showsthe top portion of Fig. 3,. drawn to an enlarged scale. v On the drawin4-denotes the boil-shaped back member,5 t e mid-member, and 6 theclosing member or ca each of which is punched or pressed 0 one piece ofsheetmetal. The mid-member is provided at its upper rim with eyes8 bentoutwardly to the rear surface thereof, and the inner sur face of the box4 is provided with hooks 7, engaging the eyes 8 when the box is in itsclosing position, whereby the mid-member is held fast securely withoutpreventing it from being movablein the necessary manner in the composedpack. To the upper rim of the inner side of the box member 4a strip 9 ofplush is attached, and a corresponding "plush-strip 10 is attached tothecl cap 6, the two strips being fastened by l presed When the cap is inits closing position, the upper rims oi the two plush 'stri )slie flushand light-proof with respect the casing; The piece of sheet-metalpressed "f outof'the cap and serving for holding fast the lush strip 10forms also an abutment mem er 11 which, bears upon' the web of the eye'8, as shown in Fig. 3, whereby the 1 width of the gapbetween the upperand the loweredge or rim'of the mid-member and .the 0PP0site Porti n isdetermined and this 102,243, and in Germany February 2, 1928.

member is securely prevented from getting disengaged from the hooks 7when-t 'e cap is In its proper position on the casing.

7 There may be provided, however, abutment lugs 12 also on the oppositeside of' paste-board pressing flap (not shown), upon the non-exposedfilms, secondly, with cutting-outs of any desired shape, the'purpose ofwhich is to reduce the weight of the implement. The lower rim of themid-member 5 is bent round tubularly, as at 14, F 3, and this tubularportion and a bent insertion 15 of paste-board or the like form togethera guide-way for the film when being pulled through from one side of thecasing to the other side, and protect the respective film from damage. 7

It is obvious that the new constructional form of the casing is greatlysimplified relatively to the known film-packs, concerning not only thefinished case, but also the manufacture of the same. Thereare by farless pieces, less manufacturing phases, and simpler tools can be used.It is valso evident that assembling the parts forming the easing, takingthis latter to pieces, if required,

filling the finished casing, and the like, can

be effected without any bendingof sheet- .metal hooks or sheet-metalpivots or other connecting or closing means, also without the use of: anadhesive and without cutting work, whereby the further advantage. isattained that the casing can be filled with from the hooks 7, thehook-and-eye connection serving then at the same time as an abutment'for the exposed films conveyed from one side of the casingto the otherside thereofso that the exposed films are re-V vvented from being'drawnthe utmen't place. j a a The new constructional form of the film casingas described-and shown by way .of

example can be used in connection with films of any'size, the advantagesstated being attained in every case.

I claim:

1. A multipartite sheet-metal casing for photographic films andfilm-packs, compris-' ing, in combination, a back-member (4), a.

-mid-member (5), and a closing cap (6),

said three parts constituting the film casing proper, substantially assetforth. 2. A multipartite sheet-metal casing for photographic filmsand film-packs, comprising, in combination, a back member (4), a

' photographic films and film-packs, comprising, in combination, a backmember (4), a

* midemember (5),,a closing cap (6), and

light-proof tightening strips (9, 10) of a soft material'attached on oneside to the sheetmetal portions connecting said back member and saidmid-member, and on the other side to that sheet-metal portion of the.cap by which this latter is supported, substantially as described.

4. A. multipartite sheet-metal casing for photographic films andfilm-packs, comPrising, in combination, a back member (4), a mid-member(5), a closing cap (6), and an abutment lug (11) carried by saidca andbearing upon said mid-member, an said lug being adapted to prevent thislatter from I beinlg shifted upwardly, substantially as set fort 1.

5. A multipartite sheet-metal casing for photographic films andfilm-packs, compris ing, in combination, a back member (4)., amid-member (5), anda closing cap (6), the lower rim of said mid-memberbeing so bent as to form the known tubular guide member (14) separatedfrom the bottom of the casing by a conveying gap, and a curved guidemember (15) inserted into said gap and being held fast therein bypressure, sub-' stantially as set forth.

In witness whereof my hand.

' JQSEF SCHULZ.

I have hereunto set"

